Pipe-machine.



' G. A. WETTENGEL.'

PIPE MAGHINE.

v APPLICATION FILED "IAE, 22, 1907.

Patented Oct. 20, 1908.

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4 PIPE MACHINE.

APPLICATION FILED JAN. 22, 1907.

Patented Oct. 20, 1908.

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APPLICATION FILED JAN. 22, 1907. 901,404 y 3 SHEETS-SHEET 3.

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Patented Oct. 20, 1908.

GEORGE ALEXANDER WETTENGEL, OF ST. LOUIS, MISSOURI.

PIPE-MACHINE.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Application led January 22, 1907. Serial No. 353,496.

To all whom it may concern:

Be it known that I, GEORGE ALEXANDER VETTENGEL, a citizen of the United States, residing at No. 4409 North Fourteenth street, in the city of St. Louis and State of Missouri, have invented a new and useful Pipe-Machine, of which the following is a specification.

This invention relates to certain new and useful improvements in pipe machines, the peculiarities of which will be fully described in this specification and pointed out in the claims.

The object of my invention is to provide a machine that will form the ends of a sheet of iron so as to constitute a joint, and in addition will bend the sheet so that the ends may be readily connected to constitute a pipe.

In the accompanying drawings on which like reference letters indicate corresponding parts: Figure 1,--represents a front view of a machine exemplifying my invention: Fig. 2,--a cross section on A-A of Fig. 1: Fig. 3,-a back view and partial section: Fig. 4,- a cross section on B--B of Fig. 1: Fig. 5,* an end view of the driving end: Fig. 6,-:1 cross section on C-O of Fig. 1: Fig. Tf-an enlarged detail of the panel bar and clamping edges forming the shoulder or panel. Fig. 8,-a similar view showing the second step in forming the hook; and Fig. 9,-a similar view showing the third step in forming the hook.

In the manufacture of stove pipe to which my machine is especially adapted, the sheet iron is 24 in. wide for standard length, and varies in the length of the sheet accoi-ding to the diameter of the pipe. A joint is made by forming a hook on each end adapted to match, and generally provided with an offset, panel or shoulder so as to constitute a lock-seam when the ends are joined and flattened.

My machine will form the hook on each end and bend the sheet so it may be readily joined. It is preferably left open for convenience in nesting for transportation and packing.

The sheets are fed separately by hand from above into the machine, through the guides E E at the top of the frame, to the stop H. Below the guides are a pair of platens L L having adjustable clamping edge plates, provided with a notch in one plate above and below, according to the depth of the offset or shoulder. One platen L is mounted on horizontal pins F F-G Gr, Figs. 3 and 4, so as to be movable to and from its mate L, which is fulcrumed on a shaft I), or otherwise supported, and is provided with lever arms V V, having rollers 'U U engaged by cams T T, keyed to a shaft K, driven by a belt over a pulley 8 on shaft K, Fig. 3, or otherwise driven, such as by a motor pinion meshed to gear 20, Fig. 1.

The platen L is operated by a pair of levers O O, each fulerumed on the shaft D or otherwise, and having a roller at one end engaged by a cam P on the shaft K, Fig. 2. The other end has a pin and slot engagement with a vertical link M, swung by horizontal links above and below, with the pivot pins engaging inclined slots 12 in the outer flanges of platen L; so that a downward movement of the links will cause an inward movement of the platen L and vice versa. Fig. 2 shows the cam P rotating in the `direction of the arrow, and about to slip off the roller on they arm O, upon which the spring 13, Fig. 4 will bring the platens L L together on the sheet that has been slipped down between them with its upper edge just below the guides To put in the shoulder or panel at each end, I provide upper and lower panel bars, I, J, adjustably mounted on rocking levers S S, fulcrumed on the shaft D or elsewhere, having rollers R R, engaged by cams Q, Q mounted on the shaft K, each of which cams has a large and a small diameter and a tooth projection, whereby the panel bars I and J, are brought to position, Fig. 7 to make the shoulder at each end of the sheet in opposite directions; and then both continue onward together with the tilting platens, with the ends of the sheet securely clamped to the position, Fig. 8, thus bending over each end of this sheet between the panel bar 4and a matching hook bar W, that is backed up by stops 14 on the frame. i The hook bars have crank ends and an inclined face, and are adjustably mounted by pivot bolt and slot in the frame, and are moved upward and downward respectively to turn over the horizontal end Fig. 8 to `the hook Fig. 9, by lever and link connections, opern ated by a single toothed cam X, engaging a roller 9 on end of lever 15, Fig. G., A spring 1G tends to hold the hook bars outward and a spring 30 holds the roller end against the cam X. Just before the hook bars are operated, the panel bars are withdrawn slightly as in Fig. 9, by the action 'of the larger diameter of cam Q, Fig. 2, which still holds off slightly the rollers R on the rocker arms S so that the panel bars are not fully open.

L L, which brings the latter vertical, as in dicated in Fig. 8. The platens are now opened by the opposite side of the notch of` cam P, Fig. 2, acting on the lever O, which allows the sheet to proceed downward to the left of the lower hook bar lV, into the bender. This bender consists of horizontal rolls 1, 2, 8 and 4. Roll 2 is adjustable with regard to roll 1, and is opened to allow the forward hook end to pass, by means of a lever 7 at each end, fulcrumed on the fixed roll 3 having bearings in the frame, and operated by cams 5 mounted on shaft K, or otherwise. These cams engage rollers 6 on levers 7, F ig. 5, and bring rolls 2 and 1 nearer each other after the forward hook has passed, and thereby feed the sheet onward between rolls 2 and 3, and 2 and 4. The latter' roll is preferably a soft roll such as cloth or felt, so as not to injure the hook. The dotted line, Fig. 4, indicates the path of the curved sheet from the bender, and this figure shows the rolls close together. On the other hand, Fig. 6 shows the rolls 2 and 1 open, corresponding to the position of the parts shown in Fig. 5, in which the roller 6 on lever 7 is being acted on by the small diameter of the cam 5, and the operating pinions (of rolls 2 and 1) are nearly out of mesh with each other. It is desirable that the teeth of these pinions should not be entirely disengaged and thereby endanger remeshing; the teeth may be extra long therefore with large pitch. But the amount of opening movement to allow the hook ends to pass is so small (about one-eighth inch,) that this engagement is readily maintained, and also the proportionate size of the teeth and the cam 5. As soon as the first hook passes between the rolls 2 and 1, the lobe of cam 5 throws the lever 7 thus closing the rolls as shown in Fig. 4; but when the upper hook reaches rolls 2 and 1, the rolls are allowed to open again4 for the passage of the latter hook, while the rolls 2 and 4 feed the sheet out of the bender. Roll 1 is adjustably mounted in the links 26, or otherwise, to vary the curvature of the sheet.

The bending rolls are driven by meshed pinions 17-18, and pinion 19, and master wheel 20 on shaft K, Fig. 5, or in other suitable manner. Vhen the bender has delivered one sheet, the following sheet is allowed to enter between the platens, by the full withdrawal of the panel bar I from the guides E, as the roller on the rocking arm S slips off the larger diameter of cam Q to the smaller" diameter, and opens the guides again as shown in Fig. 2. The next sheet then falls to the ledge H, where it stops till the hooks are formed and it is allowed to proceed to the bending rolls, as previously described.

The springs 10 and 13 preferably act on both lever arms V and S, and O and S, tending to keep their rollers in contact with their respective cams, and to operate the lever arms accordingly.

The adjustments indicated are preferred in order to accommodate different lengths of sheets required for different diameters of pipe. The drawings show the machine set for the longest length of sheet.

Referring to Figs. l and 3, it will be seen th at rolls 1 and 2 have conical matching en ds with corrugations adapted to crimp one end of the pipe passing through the rolls. Also corresponding ridges and' grooves are provided on rolls 1, 2, and 3 to put the bead on each end of the pipe.

It is evident that the shoulder in the hook y ends may be dispensed with if desired, by omitting the notch in the opposing clamping plates; but the preferred form is that shown and described, by which t-he lock-seam is produced and the joint made symmetrical. Furthermore, the bending rolls may be opened, or omitted, when it is desired to form a joint on flat sheets instead of pipes,

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without departing from the spirit of my m- Y vention.

The master wheel 20 is driven by any suitable means, such as a motor as indicated by dotted lines in Fig. l.

' It is evident that the panel bars notched clamps and hook bars may be used singly, instead of doubled as shown.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent, is

1. A pipe machine comprising a frame,

guides for the sheet, clamping platens opposite the guides, hook bars at opposite ends of said platens, cams to operate said platens and hook bars, and bending rolls to receive A 3. A pipe machine comprising a frame provided with vertical guides, a pair of clamping platens having a notch at each end at opposite sides and provided with lever arms for tilting the platens, panel bars mounted on rocking arms, and opposing said notches, means to clamp said platens, operative cams for said lever arms and rocker arms, hook bars adjacent to the ends of said platens to bend the projecting ends of the sheet by the tilting ot' the platens, and means to throw inward said hook bars to form the hook ends, substantially as described.

4. A pipe machine comprising a frame with vertical guides for the sheet, a pair of tilting platens having lever arms and pivotally mounted beneath said guides, and having a notch at each end on opposing platens, lever and link connections between said platens to effect a clamping action, panel bars opposite said notches provided with rocking arms and pivoted on the same aXis with said tilting platens to move therewith, operative cams to tilt said platens, clamp the latter and rock said rocking arms, hook bars adjacent to the ends of said platens and pivoted to said frame, means to throw inward said hook bars after the tilting of the platens, and bending rolls adjacent to the lower hook bar to receive and bend the sheet, and means to open said rolls for the passage of said hook ends.

5. A pipe machine comprising a driving shaft and cams thereon, hook-forming means operated by said cams, bending rolls adjacent to said means, a lever carrying one of said rolls, and a cam engaging said lever to open said rolls at predetermined points in the operation of said hook-forming means.

6. A pipe machine comprising a driving shaft and cams thereon, hook-forming means operated by said cams, bending rolls adjacent to said means, and provided with a matching ridge and groove for beading, and matching conical corrugated ends for crimping the sheet, a lever for carrying one of said rolls, and a ca m on said driving shaft and engaging said lever, substantially as and for the purpose described.

7. A pipe machine comprising a tilting clamp for the sheet, a double panel bar adjustably mounted on rocking arms ulcrumed on the same aXis with said tilting clamp, and means to tilt said clamp and bar in unison.

S. A pipe machine comprising opposing platens provided with adjustabley clamping edgeplates to take both ends of sheets of diferent lengths, and operative connections for said platens.

9. In a pipe machine the herein described opposing platens L L, provided with adjustable clamping edge plates to accommodate different lengths of sheets,-one plate at each edge having a notch,-a double panel bar adj ustably mounted on rocker arms, and opposing said notches, a common support for said platens and panel bars whereby they can tilt in unison, means to tilt the same, and inward moving hook-forming bars, substantially as described.

GEORGE ALEXANDER WET'IENGEL.

fitnesses GEO. L. Kinsorr, WM. A. MANHART. 

